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Espresso 0.0.2c

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This commit is contained in:
David Goeke
2026-03-20 16:57:08 -05:00
parent 021fdbbcef
commit 5971218b56
77 changed files with 4538 additions and 518 deletions
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18
drivers/elf.c
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@ -13,10 +13,10 @@
elf_executable_t* load_elf32(void* elf_data)
{
/*Elf32_Ehdr* ehdr = (Elf32_Ehdr*)elf_data;*/
Elf32_Ehdr* ehdr = (Elf32_Ehdr*)elf_data;
/* Check ELF magic */
/*if (memcmp(ehdr->e_ident, (uint8_t*)("\x7F""ELF"), 4) != 0)
if (memcmp(ehdr->e_ident, (uint8_t*)("\x7F""ELF"), 4) != 0)
{
printf("Invalid ELF file\n");
return NULL;
@ -30,7 +30,8 @@ elf_executable_t* load_elf32(void* elf_data)
Elf32_Phdr* phdrs = (Elf32_Phdr*)((uint8_t*)elf_data + ehdr->e_phoff);
for (int i = 0; i < ehdr->e_phnum; i++) {
for (int i = 0; i < ehdr->e_phnum; i++)
{
Elf32_Phdr* phdr = &phdrs[i];
if (phdr->p_type != PT_LOAD)
{
@ -43,7 +44,7 @@ elf_executable_t* load_elf32(void* elf_data)
for (uint32_t page = 0; page < segment_pages; page++)
{
void* phys = alloc_page();
void* phys = pmm_alloc_page();
void* virt = (void*)(vaddr_start + page * PAGE_SIZE);
map_page(phys, virt);
memset(virt, 0, PAGE_SIZE);
@ -53,12 +54,15 @@ elf_executable_t* load_elf32(void* elf_data)
void* src = (uint8_t*)elf_data + phdr->p_offset;
memcpy(dest, src, phdr->p_filesz);
printf("Mapped segment %d: 0x%08x–0x%08x (memsz: %u, filesz: %u)\n", i, phdr->p_vaddr, phdr->p_vaddr + phdr->p_memsz, phdr->p_memsz, phdr->p_filesz);
#ifdef _DEBUG
printf("Mapped segment %d: ", i);
printf("0x%x - 0x%x (memsz: %u, filesz: %u)\n", phdr->p_vaddr, phdr->p_vaddr + phdr->p_memsz, phdr->p_memsz, phdr->p_filesz);
#endif
}
elf_executable_t* result = malloc(sizeof(elf_executable_t));
result->entry_point = (void*)(uintptr_t)ehdr->e_entry;
return result;*/
result->entry_point = (elf_entry_t)(uintptr_t)ehdr->e_entry;
return result;
return NULL;
}